Set of key buttons for a handset



FIG. 1 is front view of a set of key buttons for a handset showing ournew design; and,

FIG. 2 is a front perspective view thereof.

The broken line showing of the remainder of the handset is forillustrative purposes only and form no part of the claimed design.

The ornamental design for a set of key buttons for a handset, as shownand described.